Parts for your 2016 Mitsubishi Asx-Radiator hose

2016 Mitsubishi ASX radiator hose: what it does and when to replace it

Based on technical references including the Mitsubishi Motors ASX (GF series) workshop manual for the cooling system, the Mitsubishi ASA electronic parts catalogue, and Australian hose catalogues from brands like Gates and Dayco, the 2016 Mitsubishi ASX is fitted with radiator hoses. These sources identify an upper radiator hose and a lower radiator hose that connect the engine to the radiator on both the 2.0-litre petrol and the available diesel variants. So yes—the radiator hose is very much a relevant service item on a 2016 ASX.

The radiator hose pair carries coolant between the engine and the radiator, allowing heat to be shed under the bonnet and keeping the engine in its optimum temperature range. The upper hose typically carries hot coolant from the engine to the radiator, the lower hose returns cooled fluid back to the water pump. Built from heat- and chemical-resistant rubber (usually EPDM), each hose relies on clamps to seal at the radiator tank and engine outlets.

For Aussie and Kiwi conditions—heat, UV, dust, and stop–start traffic—hose inspection should be part of regular servicing. A sensible rule of thumb is a quick visual and squeeze check at every service (10,000–15,000 km), with proactive replacement around 6–10 years or 100,000–150,000 km, earlier if any deterioration shows up. When a hose is due, replacing both upper and lower together, plus the clamps, reduces comeback risk.

• Signs a radiator hose needs attention: soft spots, swelling, surface cracks, oil contamination, bulges near clamps, dried coolant traces, or a sweet coolant smell.
• Cooling system symptoms: rising temp gauge, low coolant level, or visible leaks after a drive.

Good practice for replacement: allow the engine to cool fully, drain the coolant cleanly, remove old clamps and hoses, clean the sealing stubs, fit quality hoses to OE routing, and use new clamps tightened evenly. Refill with the correct Mitsubishi Genuine Super Long Life Coolant (or equivalent meeting the owner’s manual spec), bleed air from the system, and pressure-test. A test drive to confirm stable operating temperature and no leaks finishes the job.

While at it, a technician will often check the radiator cap, thermostat housing and heater hoses, as these components age together and a weak link can undo an otherwise neat repair.

Does the 2016 Mitsubishi ASX have an upper and lower radiator hose?

Yes. The ASX’s liquid-cooled engines use distinct upper and lower radiator hoses between the engine and the radiator, as detailed in Mitsubishi service manuals and parts catalogues.

How often should radiator hoses be replaced on a 2016 ASX?

Inspect at every service and plan replacement at around 6–10 years or 100,000–150,000 km, sooner if there are cracks, swelling, leaks, or soft spots. Climate and driving style can push this earlier.

What coolant should be used after changing the hoses?

Use Mitsubishi Genuine Super Long Life Coolant (blue) or an equivalent that meets the specification in the owner’s manual. Refill to the correct capacity, bleed air properly, and verify no leaks with a pressure test.